Crude benzene separation water recycling desulfurization device

Abstract

The utility model discloses a crude benzene separation water recycling desulfurization device, including oil -water separator, the import of oil -water separator is installed with benzene vapour inlet pipeline, the drainage pipe is installed to the drainage of oil -water separator, the underground condensate tank is connected to the liquid outlet of drainage pipe, the underground condensate tank one side is equipped with the underground light tar groove. Advantageous effect lies in: the utility model discloses through the underground condensate pump outlet pipeline place of the self -carrying of underground condensate tank and draws out the buried PVC pipe to the desulfurization reaction tank, and sets up the isolation structure between adjacent underground light tar groove and underground condensate tank, adds the pipeline for the extraction underground light tar groove upper water simultaneously, has realized the reuse of crude benzene separation water to the desulfurization system, and this device can reduce sewage quantity, reduce sewage treatment system production load and expense, guarantee sewage treatment system stable operation, has remarkable economic and social benefits.

Description

Technical Field

[0001] This utility model relates to the field of coke oven gas purification technology, specifically to a crude benzene separation water reuse desulfurization device. Background Technology

[0002] In the coke oven gas purification process, the crude benzene distillation system uses superheated steam as a heat source. After being cooled by a condenser, the crude benzene and steam condensate enter the oil-water separator. Based on the physical properties that crude benzene and water are incompatible, a certain amount of separated water is generated.

[0003] Currently, the crude benzene and steam condensate separated in the oil-water separator are sent to a mechanized clarification tank, then deammoniated by an ammonia stripping system, and finally sent to a biological treatment facility. This treatment method results in a large volume of wastewater, which increases the production load and operating costs of the wastewater treatment system and is not conducive to the long-term stable operation of the wastewater treatment system. Utility Model Content

[0004] (a) Technical problems to be solved The technical problem to be solved by this utility model is to provide a crude benzene separation water reuse desulfurization device that can reduce the production load and cost of the sewage treatment system and ensure the stable operation of the sewage treatment system, in light of the current state of the technology.

[0005] (II) Technical Solution This utility model is achieved through the following technical solution: This utility model proposes a crude benzene separation water reuse desulfurization device, including an oil-water separator. A benzene vapor inlet pipe is installed at the inlet of the oil-water separator, and a drain pipe is installed at the outlet of the oil-water separator. An underground condensate tank is connected to the outlet of the drain pipe. An underground light tar tank is arranged on one side of the underground condensate tank, and a desulfurization reaction tank is arranged on one side of the underground light tar tank. A buried PVC pipe is installed between the underground light tar tank and the desulfurization reaction tank, and a mechanized clarification tank is arranged on one side of the desulfurization reaction tank.

[0006] Furthermore, the benzene vapor inlet pipe is connected to the inlet flange of the oil-water separator, and the drain pipe is connected to the outlet flange of the benzene vapor inlet pipe.

[0007] Furthermore, the drain pipe is connected to the underground condensate tank.

[0008] Furthermore, a separation structure is provided between the underground light tar tank and the underground condensate tank.

[0009] Furthermore, the drainage outlet at the top of the underground light tar tank is connected to the mechanized clarification tank via a pipeline.

[0010] Furthermore, the buried PVC pipe is connected to the outlet of the underground condensate pump on the desulfurization reaction tank and the underground condensate tank.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model has the following advantages: This invention utilizes an underground condensate pump with its own underground outlet pipe to lead a buried PVC pipe to the desulfurization reaction tank, and sets up an isolation structure between the adjacent underground light tar tank and the underground condensate tank. Additionally, a pipe is added for extracting water from the upper part of the underground light tar tank, enabling the reuse of crude benzene separation water in the desulfurization system. This device reduces wastewater volume, lowers the production load and costs of the wastewater treatment system, ensures stable operation of the wastewater treatment system, and has significant economic and social benefits. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a crude benzene separation water reuse desulfurization device according to the present invention.

[0013] The annotations in the attached figures are explained as follows: 1. Oil-water separator; 2. Benzene vapor inlet pipe; 3. Drain pipe; 4. Underground condensate tank; 5. Underground light tar tank; 6. Desulfurization reaction tank; 7. Mechanized clarification tank; 8. Buried PVC pipe. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] like Figure 1 As shown, a crude benzene separation water reuse desulfurization device in this embodiment includes an oil-water separator 1, a benzene vapor inlet pipe 2 installed at the inlet of the oil-water separator 1, a drain pipe 3 installed at the outlet of the oil-water separator 1, an underground condensate tank 4 connected to the outlet of the drain pipe 3, an underground light tar tank 5 arranged on one side of the underground condensate tank 4, a desulfurization reaction tank 6 arranged on one side of the underground light tar tank 5, a buried PVC pipe 8 installed between the underground light tar tank 5 and the desulfurization reaction tank 6, and a mechanized clarification tank 7 arranged on one side of the desulfurization reaction tank 6. By leading the buried PVC pipe 8 to the desulfurization reaction tank 6 from the outlet pipe of the underground condensate pump on the underground condensate tank 4, and setting an isolation structure between the adjacent underground light tar tank 5 and the underground condensate tank 4, and adding a pipe for extracting water from the upper part of the underground light tar tank 5, the reuse of crude benzene separation water to the desulfurization system is realized.

[0016] like Figure 1As shown, in this embodiment, benzene vapor inlet pipe 2 is connected to the inlet flange of oil-water separator 1, and drain pipe 3 is connected to the outlet flange of benzene vapor inlet pipe 2. Oil-water separator 1 is mainly used to treat benzene vapor. Drain pipe 3 is connected to underground condensate tank 4. Drain pipe 3 is mainly used to discharge the crude benzene separated water in oil-water separator 1 into underground condensate tank 4. A separation structure is reserved between underground light tar tank 5 and underground condensate tank 4. The separation structure can prevent light tar in underground light tar tank 5 from flowing into underground condensate tank 4.

[0017] like Figure 1 As shown, in this embodiment, the drain outlet at the top of the underground light tar tank 5 is connected to the mechanized clarification tank 7 via a pipe. Water from the top of the underground light tar tank 5 is discharged into the mechanized clarification tank 7 through the pipe, and the pipe extends 2m into the underground light tar tank 5 (1m below the liquid surface). The buried PVC pipe 8 is connected to the outlet of the underground condensate pump on the desulfurization reaction tank 6 and the underground condensate tank 4. With the help of the underground condensate pump on the underground condensate tank 4, the crude benzene separation water in the underground condensate tank 4 can be introduced into the desulfurization reaction tank 6.

[0018] The specific implementation process of this embodiment is as follows: First, the cooled benzene vapor is introduced into the oil-water separator 1. After the cooled benzene vapor enters the oil-water separator 1, based on the physical property that crude benzene and water are incompatible, a certain amount of crude benzene separation water will be generated. The crude benzene separation water in the oil-water separator 1 will be discharged into the underground condensate tank 4 through the drain pipe 3. The crude benzene separation water in the underground condensate tank 4 will be pumped by the pump built into the underground condensate tank 4 and finally transported to the desulfurization reaction tank 6 through the buried PVC pipe 8 as makeup water, thereby realizing the recycling of crude benzene after separation. Since the crude benzene separation water is reused in the desulfurization system under the action of this device, the amount of sewage is effectively reduced, the production load and cost of the sewage treatment system are reduced, and the stable operation of the sewage treatment system is ensured, which has significant economic and social benefits.

[0019] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crude benzene separation water reuse desulfurization device, characterized in that: The system includes an oil-water separator (1), with a benzene vapor inlet pipe (2) installed at the inlet of the oil-water separator (1), a drain pipe (3) installed at the outlet of the oil-water separator (1), an underground condensate tank (4) connected to the outlet of the drain pipe (3), an underground light tar tank (5) arranged on one side of the underground condensate tank (4), a desulfurization reaction tank (6) arranged on one side of the underground light tar tank (5), a buried PVC pipe (8) installed between the underground light tar tank (5) and the desulfurization reaction tank (6), and a mechanized clarification tank (7) arranged on one side of the desulfurization reaction tank (6).

2. The crude benzene separation water reuse desulfurization device according to claim 1, characterized in that: The benzene vapor inlet pipe (2) is connected to the inlet flange of the oil-water separator (1), and the drain pipe (3) is connected to the outlet flange of the benzene vapor inlet pipe (2).

3. The crude benzene separation water reuse desulfurization device according to claim 1, characterized in that: The drain pipe (3) is connected to the underground condensate tank (4).

4. The crude benzene separation water reuse desulfurization device according to claim 1, characterized in that: A separation structure is reserved between the underground light tar tank (5) and the underground condensate tank (4).

5. A crude benzene separation water reuse desulfurization device according to claim 4, characterized in that: The drainage outlet at the top of the underground light tar tank (5) is connected to the mechanized clarification tank (7) via a pipeline.

6. The crude benzene separation water reuse desulfurization device according to claim 5, characterized in that: The buried PVC pipe (8) is connected to the underground condensate pump outlet on the desulfurization reaction tank (6) and the underground condensate tank (4).

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